She hadn't undergone any gender-affirming surgery, such as orchidectomy (the surgical removal of testicles) or vaginoplasty (the construction or reconstruction of the vagina).
According to the study, the woman underwent a three-and-half month treatment that included a drug to stimulate lactation and hormone therapy to suppress testosterone.
Speaking to Daily Mail Online, the patient's doctor Tamar Reisman, MD, said the milestone was a breakthrough for transgender medicine, adding: 'We are happy that the patient shared her experience with us, and we are happy to help our patients build happy, healthy, transgender families'. After the child was born, the patient could produce 227 grams of milk a day and sufficiently breastfed for six weeks.
But it's too early to say whether the transgender approach is safe and nutritious for infants, said Madeline Deutsch, clinical director of the University of California, San Francisco Center of Excellence for Transgender Health.
Reisman said that with an optimised hormone regimen it may be possible to induce lactation without domperidone, because chest stimulation naturally increases the breast milk-producing hormone prolactin.
Still, when asked about the case study, Thomas, the spokeswoman for the AAP, said she believes "babies should get breast milk". The drug is widely used in Canada, but it's banned in the United States for its cardiac risks. They wrote that it was unclear which parts of the regimen were most beneficial to producing milk. "This case illustrates that, in some circumstances, modest but functional lactation can be induced in transgender women". The patient instead made a decision to take on the role of being the primary food source for her infant.
"Many transgender women are looking to have as numerous experiences of non-transgender women as they can, so I can see this will be extremely popular".
Later, the patient began supplementing breastfeedings with 4-8oz of Similac brand formula daily due to concerns about insufficient milk volume, Reisman said.
The patient expressed a desire to breast-feed since her partner was five months pregnant and did not have the desire to breast-feed. The mother continues to breastfeed as a supplement to formula feeding.
American woman-transgender became the first in the world, who dare to feed their child breast milk. The transgender woman hoped to be the primary food source for the child, whom she would also adopt, the report said. Deutsch, also a transgender woman with a 6-month-old child, said she understands transgender mothers, but trying to induce lactation is "not something I would do".